Volume 2, Book 20, Number 201:
Narrated ‘Abdullah bin Dinar:
On traveling, ‘Abdullah bin ‘Umar used to offer the prayer on his Mount by signs whatever direc –
tion it took. ‘Abdullah said that the Prophet used to do so.
Volume 2 – 254 / 1700
SAHIH BUKHARI VOLUME 2 > BOOK 20: SHORTENING THE PRAYERS (AT-TAQSEER)