It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that on the day Sayyiduna Sa'd bin Mu'adh (may Allah be pleased with him) died, the Messenger of Allah (peace and blessings be upon him) stood at his grave, then recited "Inna lillahi wa inna ilayhi raji'un (We belong to Allah and to Him we return)", then said: "If anyone could have been saved from the squeezing of the grave, Sa'd would have been saved. He was indeed squeezed, then it was eased from him."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 12919