One type of mutual etiquette amongst the Sāmbnojika (commonsel co-religionist) ascetics to pay obeisance by folding the palms to Saṃbhojika (commonsel co-religionist) ascetics of one's own order or Sāṃbhojika ascetics belonging to other order.
sambhogikānāmanyasambhogikānāṃ vā saṃvignanaṃ vandanakaṃ - praṇāmamanjalivragrahaṃ, namaḥ kṣamāśramaṇebhyaḥ.
(Sama 12.2 Vṛ Pa 22)