Allah’s Apostle says, “The most beloved prayer to Allah is that of David and the most beloved fasts to Allah are those of David. He used to sleep for half of the night and then pray for one third of the night and again sleep for its sixth part and used to fast on alternate days.” Rasulullah S.A.W. said “if you read the kalima with conviction just once… Jannah becomes upon you
The first Hadith has been recorded by Imaam Bukhari in his Sahih more than once.
As for the second Hadith refer Saheeh Bukhari Hadith1131; 3420.
and Allah Ta’ala Knows Best
Moulana Muhammad ibn Moulana Haroon Abassommar
FACULTY OF SPECIALTY IN HADITH