Pundarika: I remember one time I was in Mayapur in 1976 and was serving as a pujari. One day I was collecting tulasi manjaris from the tulasi plants that grew around the temple. All of a sudden Prabhupada’s servant yelled down, “Pundarika, come upstairs. Srila Prabhupada wants to talk to you. Come right now.” When I got there Prabhupada told me, “Never touch tulasi with a knife.” I had been cutting the tulasi manjaris with scissors and Prabhupada said, “Never touch tulasi with a knife.” So I learned to pick by hand the tulasi manjaris and not a knife.
Reference: Remembrances by Sidhanta Das- Folio Vedabase