The Messenger of Allah ﷺ prayed the funeral prayer over a deceased person after they had been buried.Waki said, Sufyan narrated to us something similar.
حدثنا عبد الرزاق قال أخبرنا سفيان عن سليمان الشيباني عن الشعبي
أن رسول الله ﷺ صلى على جنازة بعد ما دفنت ووكيع قال حدثنا سفيان مثله
No references are available.
Both of its chains of transmission are sahih. Sulayman Shaybani is Abu Ishaq. Ahmad narrated it here from Abdul-Razzaq and Waki, both of them from Sufyan Thawri, and the hadith is a repetition of 1962.