Dua while throwing handfuls of soil into the grave

Īmānan bika wa taṣdīqan li-rasūlika wa īqānan bi-baʿthika hādhā mā waʿadana r-Raḥmānu wa ṣadaqa l-mursalūn

In faith in You, in confirmation of Your messenger, and in certainty of resurrection — this is what the Most Merciful promised us, and the messengers spoke the truth.