THE FIQH DEPARTMENT

In the Name of Allah, The Most Beneficent, The Most Merciful.
Although every Fiqh opinion is based on evidence, often times, the scholars differ in their views. This room for differences is a mercy from Allah, and as long as there is evidence to support an opinion, then we must respect scholars' views, even if we may not always agree.
The Prophet (SAW) said:
"Whoever performs Ijtihad and errs will receive one reward. Whoever performs Ijtihad and arrives at the correct answer gets double the reward"
(Bukhari) 
Raising the Hands in Du`a After Every Prayer PDF Print E-mail
Fiqh: Islamic Jurisprudence - Salah
Written by Abdul-Aziz Bin Baz   
Question: Is there any evidence to suggest that the Messenger of Allaah (sal-Allaahu `alayhe wa sallam) raised his hands in supplication after the obligatory prayer itself, since there are those who have said to me that he would not raise his hands in supplication after the obligatory prayer?

Response: It is not authenticated that the Prophet (sal-Allaahu `alayhe wa sallam) would raise his hands after the obligatory prayer, and nor has it been authenticated that the companions (radhi-yAllaahu 'anhum) (would do so) from that which we know. So that which some people do in raising their hands after the obligatory prayer is an innovation which has no basis, for that which the Prophet (sal-Allaahu `alayhe wa sallam) said:

«Whoever does an act which is not in agreement with us (i.e. Allaah (subhaanahu wa ta'aala) and Muhammad (sal-Allaahu `alayhe wa sallam) ) then it will be rejected», [Muslim transmitted it in his Saheeh].

And (likewise) he (sal-Allaahu `alayhe wa sallam) said:

«Whoever introduces anything into this matter of ours (i.e. Islaam) that which is not from it, will have it rejected», [It's authenticity is agreed upon (by both Imaam al-Bukhaaree and Imaam Muslim]

Shaykh Ibn Baaz
 Silsilah Kitaab ad-Da 'wah (1), al-Fataawa - Volume 1, Page 74