What is Sufficient in Tayammum.. (Hadith No. 337)
Hadith no. 335 is a repeat. Read it here.
Narrated ‘Abdur Rahman bin Abza:
‘Ammar said to ‘Umar “I rolled myself in the dust and came to the Prophet who said, ‘Passing dusted hands over the face and the backs of the hands is sufficient for you.’ “
Lesson: don’t roll yourself over in dust i.e. don’t use too much dust while doing tayammum. It’s not like wudhu, that you have to make sure all your body parts are thoroughly wet. It’s more like a concept. By touching-up dust on your face and hands, you’re supposed to feel ‘pure’ and ready for worship.