Musannaf Ibn Abi Shayba 33:305

Abdullah ibn Idris narrated to us, from Layth, from al-Qasim, who said: Abdullah said: Do not be hasty in praising people or condemning them, for a man may please you today and displease you tomorrow, and he may displease you today and please you tomorrow. Indeed, servants change, while Allah forgives sins on the Day of Resurrection. Allah is more merciful to His servants on the day they come to Him than a mother who spread a bedding for her child on the ground, then stood up searching for his bedding with her hand; if there was a sting, it would be for her, and if there was a thorn, it would be for her.