Allah's Messenger said: "Whoever forgets a Salat then he is to pray it when he remembers it."
Jami` at-Tirmidhi Book 2, Hadith 30
← Previous Hadith "They asked the Prophet about when they sIept past the Salat. He said: 'There is no negligence in sleep, negligence is only while one is awake. So when one of you forgets a Salat, or sleeps through it, then let him pray it when he remembers it.'"

Jami` at-Tirmidhi Book 2, Hadith 29 Next Hadith → "The idolaters kept Allah's Messenger distracted from four prayers on the Day of Al-Khandaq (the battle of the Trench) until as much as Allah willed of the night had passed. So he ordered Bilal to call the Adhan, then he called the Iqamah to Zuhr, then he called the Iqamah to pray Asr, then he called the Iqamah to pray Maghrib, then he called the Iqamah to pray Isha."

Jami` at-Tirmidhi Book 2, Hadith 31