妙法蓮華經玄贊 10.172

10.172

贊曰：復手摩頂付令受持普令聞知。至三摩者，令受殷勤，法皆三故、傳燈之法必重付故。

Eulogy: Again rubbing their crowns with his hand, he entrusts it to be received and upheld, universally causing it to be heard and known. Rubbing up to three times is to make them receive it with earnestness, because dharmas are all threefold, and the method of transmitting the lamp must be entrusted repeatedly.