The Prophet (peace and blessings be upon him) said:
"Hold fast to tasbih, tahlil and taqdis (glorifying, declaring the Oneness and the holiness of Allah), and count them on your fingertips, for they will be questioned and made to speak. And do not be heedless, lest you forget the mercy."
Hadith Referenceصحیح الجامع الصغیر / حرف العين / 4087
Hadith Gradingالألبانی:حسن
Hadith Takhrij[ت ك] عن يسيرة. الضعيفة ٨٣، المشكاة ٢٣١٦، صحيح أبي داود ١٣٤٥: حم، د، حب.