The affixes ṭhañ comes in the remaining senses after a vṛddha word ending in u and denoting a locality of East-folks.,
The phrase ओर्देशी is here understood. Thus आढकजम्बुकः, शाकजम्बुकः नापितवास्तुकः ॥
The affix ठञ् would have been valid by the last sutra also, the present sutra makes a नियम or restriction, showing that in the case of words denoting places of East, the rule applies to those words only, which are Vriddha. Therefore it does not apply to मल्लवास्तु, from which we have माल्लवास्तवः ॥,