The Prophet ﷺ said that Allah says, "Whoever loses his two beloved ones and bears it with patience, seeking reward from Me, I will not be content with any reward for him less than Paradise."
عن النبي ﷺ قال: يقول الله عز وجل: من أذهبت حبيبتيه فصبر واحتسب لم أرض له ثوابا دون الجنة.
Tirmidhi (2401) reported it from Mahmud bin Ghaylan, who said, Abdul-Razzaq narrated to us, Sufyan informed us, from Amash, from Abu Salih, from Abu Hurairah, and he mentioned it. Tirmidhi said, "Hasan sahih." I say, it is as he said.Imam Ahmad also reported it in the Musnad (7597) from Abdul-Razzaq by this same route. Ibn Hibban reported it in his Sahih (2932) through the hadith of Suhayl bin Abu Salih, and Darimi (2797) through the hadith of Jareer bin Abdul-Hameed, both of them from Amash, except that neither of them attributed it up to Allah , but rather made it a saying attributed only to the Prophet ﷺ.