Narrated Jabir bin 'Abdullah :
While delivering a sermon, Allah's Apostle said, "If anyone of you comes while the Imam is delivering the sermon or has come out for it, he should offer a two Rakat prayer."
Vol: 002 Book: 021 Hadith: 267
A Selected Dua
There is none worthy of worship but Allah, surely death has agonies.
Info: Al-Bukhari, cf. Al-Asqalani, Fathul-Bari 8/144. The Hadith also mention him using the Siwak (tooth stick).