Musannaf Ibn Abi Shaybah 34391 — Reports on Ibn Abbas

Isma'il (may Allah have mercy on him) said that Shu'ayb bin Yasar (may Allah have mercy on him) said: When Sayyiduna Ibn Abbas (may Allah be pleased with them both) was placed in his shroud, a white bird came and entered his shroud, and that bird was never seen again after that.