(3) باب كَيْفَ فُرِضَتِ الصَّلاَةُ .
It was narrated that 'Aishah said:
"The Salah was enjoined two Rak'ahs at a time, then the Salah when traveling remained like that, but the Salah while resident was increased." (ES)
Reference (ES): Sunan an-Nasa'i 455 (ES)
In-book reference (ES): Book 5, Hadith 8 (ES)
English translation (ES): Vol. 1, Book 5, Hadith 456 (ES)