Ishaq bin Mansur al-Kausaj إسحاق بن منصور بن بهرام - الكوسج · The Book on Hajj

When Ibn Umar would say the talbiyah he would continue saying: "Labbaik Allahumma labbaik. Labbaik la sharika laka labbaik. Innal-hamda wan-ni`mata laka wal-mulk, la sharika laka" (I respond to Your call O Allah! I respond to Your call, You have no partner, I respond to You call. All praise, thanks and blessings are for You. And You have no partners with You). He said: "Abdullah bin Umar would say: 'This is the Talbiyah of the Messenger of Allah.' He would…

"The Prophet delayed the visiting Tawaf until the night."

"The Prophet performed Umrah four times, one of them was during Rajab."

The Prophet said: "Umrah during Ramadan is equal to Hajj."