Sahih Muslim · Hadith 6361
The Book Pertaining to the Merits of the Companions (Allah Be Pleased With Them) of the Holy Prophet - كتاب فضائل الصحابة رضى الله تعالى عنهم
وحدثناه محمد بن المثنى، وعبيد الله بن سعيد، قالا حدثنا يحيى، - وهو القطان - عن عبيد الله، بهذا الإسناد في معنى حديث أبي أسامة وزاد قال فترك الصلاة عليهم .
This hadith has been narrated on the authority of 'Ubaidullah with the same chain of transmitter but with the addition of the words: " He abandoned saying prayer over the hypocrites who had died."
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).