Understanding and application

What grammatical relationship holds between طَيِّبَةٍ and كَلِمَةٍ?

Respectful Gatherings, Goodwill, Charity, and Valuing Time (Hadith 169–176)

• They are unrelated verbs
• The first word is a preposition
• Ṭayyibah is an adjective qualifying kalimah
• Ṭayyibah is a masculine plural verb