Here salakhnay may mean valuable advices/message or something 'wise'.

The question asks about the message given by Ashfaq Ahmad to his people/society in 'Tahli day thalay'.

You need to summarize all the six drams a bit and explain the message contained in those by highlighting related events in the drama.
Following are some points which may be highlighted:

Ikhlaqi Sabaq, Pind di rehtal behtal dian tasviraan, pind day lokan di saadgi tay sachai, qurbani da jazba, mehman nawazi, pind tay shehr di tehzeeb da farq, tajasus tay mazah, kirdaar nigari, saada tay aam fehm punjabi zaban, danishmandi dian gallan, jagir darana nizam di nindia, tahli pind di saanjh di alamat.

All above points may be linked with the related drama(s). You should also write quotes(lines) said by characters in drama while giving explaination.

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