إِنَّ لِلَّهِ مَا أَخَذَ وَلَهُ مَا أَعْطَى وَكُلُّ شَيْءٍ عِنْدَهُ بِأَجَلٍ مُسَمًّى فَلْتَصْبِرْ وَلْتَحْتَسِبْ
Transliteration
Inna lillahi ma akhadha wa lahu ma a'ta wa kullu shay'in 'indahu bi'ajalin musamman faltasbir waltahtasib
English meaning
To Allah belongs what He took and to Him belongs what He gave. Everything with Him has an appointed time. So be patient and seek reward from Allah.
When is it recited?
Said to comfort someone who has lost a loved one.
Source
Bukhari, Jana'iz 33, 1284; Muslim, Jana'iz 11, 923