Namaz-e Hadya-e Mayyit
Namaz-e Hadya-e Mayyit means the salat that is done for sending its reward as gift to a deceased person.
This salat can be done at any time, as many times, and for as many deceased people as possible. (Unlike the namaz-e wahshat which can be done only for one person at a time.)
Namaz-e Hadya-e Mayyit can be said like the subh prayer; only the niyyat (intention) changes.
However, it is better to do this namaz in the method taught by Imam Ja‘far as-Sãdiq (a.s.) as follows:
1st Rak‘at: al-Hamd and then surah al-Qadr once.
2nd Rak‘at: al-Hamd and then al-Kawthar once.