Musannaf Ibn Abi Shaybah 38650 — the first to do a thing, and who did

Sayyiduna Tamim al-Dari (may Allah be pleased with him) said that on the Day of Resurrection the first thing to be taken into account will be the obligatory prayer. If it turns out complete, well and good. If it does not turn out complete, it will be said: "See whether he has any voluntary prayers." The deficiency of the obligatory prayers will then be made up from his voluntary prayers. If the obligatory prayers do not turn out complete and he has no voluntary prayers either, that man will be seized and thrown into Hell.