Amount of alms.
In the place of a fixed amount of alms the Koran only says to give what ye can spare.
"They will ask thee also what shall they bestow in alms:
"Say: What ye can spare."—Ibid, 216, 217.
Fasts.
Instead of imposing a very strict fast, which in the middle of summer is extremely mortifying, the Koran makes its observance optional.
"And as for those who are able to keep it and yet observe it not, the expiation of this shall be the maintenance of a poor man. And he who of his own accord performeth a good work, shall derive good from it: and good shall it be for you to fast, if ye knew it."—Ibid, 180.
No prescribed forms of prayer.
The Koran does not teach any prescribed forms of worship and other ritualistic prayers. No attitude is fixed, and no outward observance of posture is required. There is no scrupulosity and punctiliousness, neither the change of posture in prayer nor the displacement of a single genuflexion calls any censure on the devotee in the Koran. Simply reading the Koran (Suras LXXIII, 20; XXIX, 44), and bearing God in mind, standing and sitting; reclining (III, 188; IV, 104) or bowing down or prostrating (XXII, 76) is the only form and ritual, if it may be called so, of prayer and worship taught in the Koran.
"Recite then as much of the Koran as may be easy to you."—Sura LXXIII, 20.