I am hanfi but my friend is ehle hadith (salafi) he says that raise the hands before & after RAKOO in namaz. He has proof of this in Hadith.
In the name of Allāh, the Most Gracious, the Most Merciful.
Assalamualaikum Warahmatullahi Wabarakatuhu
Alhamdulillah, we are very pleased to see that when you have been confronted with such a situation, you have turned to our Ulama for advice.
Allah Ta‘ala mentions in the Holy Quraan:
فَاسْأَلوا أَهْلَ الذِّكْرِ إِنْ كُنْتُمْ لا تَعْلَمُونَ
“Ask the People of the Book if you do not know”
You should also bear in mind that as a follower of the Hanafi Mazhab, we should adhere to our Mazhab only, and not fall in arguments with such people as the Ahle Hadith.
Nevertheless, there are numerous Ahaadith to substantiate Imam Abu Hanifa Rahmatullahi Allai’s Mazhab :
عن علقمة قال قال عبد الله بن مسعود ألا أصلى بكم صلاة رسول الله -صلى الله عليه وسلم- فصلى فلم يرفع يديه إلا فى أولمرة
“Alqamah (rahimahullah) reports: Abdullah bin Mas’ood once asked them: Shall I perform for you the salat of Rasulullah (sallallaahu alayhi wa sallam)? So he performed the salat and lifted his hands only at the beginning of the salat” 
(The above Hadith is authentic- Athaar Al-Sunan, Pg 133, Imdadiyya)
This Hadith explicitly explains that Rasulullah Sallallaahu Alayhi Wasallam raised his hands only once in salaat and that was at the beginning.
عن البراء بن عازب رضي الله عنه قال : كان النبي صلى الله عليه و سلم إذا كبر لافتتاح الصلاة رفع يديه حتى يكونإبهاماه قريبا من شحمتي أذنيه ثم لا يعود
“Baraa Bin ‘Azib Radiyallaahu Anhu reports: When Rasulullah Sallallaahu Alayhi Wa Salam used to make takbeer to begin salat, he would raised his hands until his thumbs were close to his earlobe and then never repeated this” (ie he never raised his hands again in the salat)
(The above Hadith is sound enough to be used as a proof- Ma’arif Al-Sunan, Vol 2, Pg 493, H.M Sa’eed)
عن الأسود قال : رأيت عمر بن الخطاب رضي الله عنه يرفع يديه في أول تكبيرة ثم لا يعود
“Aswad (rahimahullah) reports: I saw Umar Bin Khattab (radiyallaahu anhu) raising his hand at the first takbeer and thereafter he did not raise his hands”
(The above narration is authentic- Aathaar Al-Sunan, Pg 136, Imdadiyya)
عن عاصم بن كليب عن أبيه : أن عليا رضي الله عنه كان يرفع يديه في أول تكبيرة من الصلاة ثم لا يرفع بعد
“Aasim Bin Kulaib reports from his father that Ali (radiyallaahu anhu) used to raise his hands at the first takbeer of salat and did not raise them thereafter”[5
(The above narration is authentic- Nasb Al-Rayah, Vol 1, Pg 407, Makkiyya)
عن مجاهد قال : صليت خلف بن عمر رضي الله عنهما فلم يكن يرفع يديه إلا في التكبيرة الأولى من الصلاة
“Mujahid reports: I performed salat behind Ibn Umar (radiyallaahu anhu) and he raised his hand only at the first takbeer”[6
(The chain of narrators in the above hadith is authentic- Aathaar Al-Sunan, Pg 138, Imdadiyya)
وعن ابن عباس وابن عمر رضي الله عنهما عن النبي صلى الله عليه وسلم قال ترفع الأيدي في سبعة مواطن افتتاحالصلاة واستقبال البيت والصفا والمروة والموقفين وعند الحجر
“Abdullah Bin Abbas and Ibn Umar (radiyallaahuma) report that Rasulullah (sallallaahu alayhi wa sallam) said: The hands should be raised on seven occasions only; beginning of salat……” (There is no mention of raising the hands during salat except at the beginning)[7
عن عباد بن الزبير أن رسول الله صلى الله عليه وسلم كان إذا افتتح الصلاة رفع يديه في أول الصلاة ، ثم لم يرفعها فيشيء
“Abaad bin Zubair reports: When Rasulullah (sallallaahu alayhi wa sallam) would begin his salat, he would raise his hands and did not raise them thereafter until he completed his salat”[8
Even though your friend has Ahaadith which appear to be contrary to the above mentioned Ahaadith, It is important to realize that every Hadith cannot be taken at face value, even though it might be Saheeh. There are many factors which could affect the status of practicing on the Hadith. Our illustrious Fuqaha رحمهم الله تعالى have made painstaking efforts in sifting out and clarifying which Ahaadith should be used and which should be left out. Not every Hadith is ma’mool bih (practiced upon). Hence in this matter we would follow the opinions of the stalwarts of our Mazhab and not to engage in academics without having the qualifications to do so.
And Allah Ta‘ala knows best
Mufti Luqman Hansrot
 (Surah Al Ambiyaa, Verse 7)
 (Al-Tirmizhi, vol 1, pg 59, HM Sa’eed)
 (Sharh Ma’ani Al-Aathaar, vol 1, pg 162, Haqqaniyya)
 (Sharh Ma’ani Al-Aathaar, Vol 1, Pg 164, Haqqaniyya)
 (Sharh Ma’ani Al-Aathaar, vol 1, pg 163, Haqaniyya
 (Majma’ Al-Zawaaid Vol 2, Pg 103, Qudsi)
 (Nasb Al-Rayah, Vol 1, Pg 404, Makkiyya)