Ishraaq and Awwabeen

Approximately fifteen to twenty minutes after sunrise, you may read two or four rakaats. This is called ishraaq.

After the two sunnats of Maghrib one may read six rakaats. This is known as awwaabeen.

Hazrat Anas (radhiyallahu anhu) reports that Rasulullah (sallallahu alaihi wasallam) said, "The one who performs fajr salaah with jamaat (in the musjid) and thereafter sits in his place remembering Allah Ta'ala until sunrise, thereafter he stands up and performs two rakaats salaah, he will receive the reward of hajj and umrah. Rasulullah (sallallahu alaihi wasallam) thereafter said twice, he will receive the reward of a complete hajj and umrah."

Hazrat Abu Hurairah (radhiyallahu anhu) reports that Hazrat Rasulullah (sallallahu alaihi wasallam) said, "Whoever performs six rakaats after maghrib without speaking of anything impermissible in between, he will receive reward equivalent to twelve years of ibaadat."

And Allah Ta'ala (الله تعالى) knows best.