"The Messenger of Allah circumambulated the House seven times, walking rapidly in three circuits and walking (at a normal pace)b in three. Then he stood at the Maqam (place) of Ibrahim as a place of prayer, raising his voice so that the people could hear. Then he went and touched the Black Stone and went (to perform Sai) and said: 'We will start with that with which Allah started.' So he started with As-Safa, climbing up until he could see the House and he said three times: ''La ilaha illallah, Wahdahu la sharika lah, lahul-mulku wa lahul-hamdu, yuhyi wa yumitu, wa huwaala kulli shayin qadir (There is none worthy of worship except Allah alone with no partner or associate, His is the dominion and to Him be praise, He gives life and death, and He has power over all things).' Then exclaimed Allah's greatness and praised Him, then he supplicated as much as was decreed for him. Then he came down walking, until he reached level ground at the bottom of the valley. Then he hastened until the ground began to rise. Then he walked until he came to Al-Marwah and climbed up it, and when he could see the house he said: 'La ilaha illallah, Wahdahu la sharika lah, lahul-mulku wa lahul-hamdu, yuhyi wa yumitu, wa huwaala kulli shayin qadir (There is none worthy of worship except Allah alone with no partner or associate, His is the dominion and to Him be praise, He gives life and death, and He has power over all things).' He said that three times, then he remembered Allah, and glorified and praised Him, then he supplicated there for as long as Allah willed. And he did that until he had finished Sai."
Sunan an-Nasa'i Book 24, Hadith 357
Yahya related to me from Malik that he had heard some of the
people of knowledge say, "If someone goes into ihram to do umra and
then wants to go into ihram to do hajj as well, he can do so, as long
as he has not done tawaf of the House and s'ay between Safa and Marwa.
This is what Abdullah ibn 'Umar did when he said, 'If I am blocked
from the House we shall do what we did when we were with the Messenger
of Allah, may Allah bless him and grant him peace.' He then turned to
his companions and said, 'It is the same either way. I call you to
witness that I have decided in favour of hajj and umra together. ' "
Malik said, "The companions of the Messenger of Allah, may
Allah bless him and grant him peace, went into ihram to do umra in the
year of the farewell hajj, and the Messenger of Allah, may Allah bless
him and grant him peace, said to them, 'Anyone that has a sacrificial
animal with him should go into ihram to do hajj and umra together, and
he should not come out of ihram until he has finished both.' "
Muwatta Malik Book 20, Hadith 43
Gold is to be paid for by gold, silver by silver, wheat by wheat, barley by barley, dates by dates, salt by salt, like by like, payment being made hand to hand. He who made an addition to it, or asked for an addition, in fact dealt in usury. The receiver and the giver are equally guilty.
Sahih Muslim Book 22, Hadith 103