What are the techniques of meditation does Muhammad recommend?
Meditation is completely different from prayer. I read that meditated a lot in the cave of Hira. Perhaps the word "meditate on" was a translation error? If he does not meditate, what advice he given for proper posture, breathing exercises, techniques, visual (eyes open or closed?), useful and useless methods of concentration, etc. Shadow-It may be easy to call something "stupid" or "not applicable" if you do not learn what it really is. Maths is useless if you close your mind to it. Suga Meditation is not intended to simply "relax." He completely re-train and programs of your mind.
Prophet Muhammad (saww) always prayed in the cave of Hira same. Read Nanjul Balagha prayers used by Rasoolallah (saww) in the cave of Hira. Imam Ali (As) was always with him. Imam Ali (as) has described the prayers of Rasoolallah (saww) in Hira cave. Mediation is wrongly used word. Rasoolallah (saww) used to offer prayers and in the cave of Hira Duas.
Extended Prayer Yoga Posture