Abdah bin Sulaiman al-Klabi عبدة بن سليمان الكلابي أبو محمد الكوفي · The Book on Jana''iz (Funerals)

"Umm Sa'd died while the Prophet was absent. So when he arrived he performed Salat over her, and a month had already passed."

"A deceased man would be brought to the Messenger of Allah while a debt was due upon him. So he would say: 'Has he left anything to pay off his debt?' If he was told that he had left something to pay it then he would pray (the funeral prayer) for him. Otherwise he would tell the Muslims: 'Pray for your companion.' So when Allah granted him the victories, he stood and said: 'I am more worthy in the case…