The affix ñya comes in the sense of 'who stays there' after the word gambhīra,
This debars अण् ॥ गम्भीरे भवं = गाम्भीर्यम् 'gravity'.
Vart:- So also after बहिः, देव and पंचजन. As बाह्यम्, दैव्यम् and पांचजन्यम् ॥ The final of बहिस् is elided by the vartika under 4.1.85. The word 'daivya' could be also formed under another Vartika of the same.
Vart:- The affix nya comes after chaturmasa in the sense of a sacrifice; as चातुर्मास्यानि व्रतानि, चातुर्मास्यो यज्ञः, otherwise चातुर्मासः ॥,