Narrated Yazid bin Al ‘Ubaid:
I used to accompany Salama bin Al-Akwa’ and he used to pray behind the pillar which was near the place where the Quran’s were kept I said, “O Abu Muslim! I see you always seeking to pray behind this pillar.” He replied, “I saw Allah’s Apostle always seeking to pray near that pillar.”
-> A pillar can be taken as a sutra. It’s a sunnah.
I saw the most famous people amongst the companions of the Prophet hurrying towards the pillars at the Maghrib prayer before the Prophet came for the prayer.
-> After the Maghrib adhaan (call for prayer), and before the Maghrib salah, hasten to pray two nawafil. Mostly because there ain’t much time in between the adhaan and salah. :)
Narrated Ibn ‘Umar:
The Prophet entered the Ka’ba along with Usama bin Zaid, ‘Uthman bin Talha and Bilal and remained there for a long time. When they came out, I was the first man to enter the Ka’ba. I asked Bilal “Where did the Prophet pray?” Bilal replied, “Between the two front Pillars.”
‘Abdullah bin ‘Umar said, “Allah’s Apostle entered the Ka’ba along with Usama bin Zaid, Bilal and ‘Uthman bin Talha Al-Hajabi and closed the door and stayed there for some time. I asked Bilal when he came out, ‘What did the Prophet do?’ He replied, ‘He offered prayer with one pillar to his left and one to his right and three behind.’ In those days the Ka’ba was supported by six pillars.” Malik said: “There were two pillars on his (the Prophet’s) right side.”
Read also: Inside the Ka’bah.