RTar, 3, 6.2 sthūlā ca mṛttikā yā syāt mūṣārthaṃ sā matottamā //

RTar, 4, 47.1 bhūmau hastamitaṃ nimnaṃ vidadhyād garttamuttamam /

RTar, 4, 57.2 gharṣaḥ sūryasamāṃgulaḥ suviśado lohādibhirnirmitaḥ khalvo'yaṃ rasasiddhikṛnnigadito droṇīnibho'tyuttamaḥ //