The Compendium of Bheḷa 1.4.21

1.4.21

sūcyagreṇātha tīkṣṇena vyathayetkaṇṭakena vā | candanasya ca yatsāraṃ badarāt khadirasya ca ||

One should then pierce [them] with the sharp point of a needle or with a thorn. / And whatever is the heartwood of sandalwood, of badara, and of khadira,