Charak Samhita
यथोक्तगुणयुक्तानां देशजानां यथाविधि। पयः पुष्पेऽस्य, निर्वृत्ते फले पेया पयस्कृता॥५॥
Jimutaka endowed with all attributes, growing in appropriate land should be collected according to the prescribed procedures as described in earlier chapter(Madanaphala kalpa 1:9,10,14).
english translation