Bukhari and Muslim reported from Alqama: قُلْتُ لِعَائِشَةَ رَضِيَ اللَّهُ عَنْهَا هَلْ كَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَخْتَصُّ مِنْ الْأَيَّامِ شَيْئًا؟ قَالَتْ: لَا، كَانَ عَمَلُهُ دِيمَةً، وَأَيُّكُمْ يُطِيقُ مَا كَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يُطِيقُ؟“I asked `Aisha (ra): "Did the Messenger of Allah (saw) use to choose some special days?"

These verses elucidate how to invite to Allah (swt), which is first and foremost the Dawah to Allah (swt). So, it is not the invitation to any person or people or any group or any party.

The Noble Quran represents the basis for the confirmation (ithbaat) of the validity of the Message of Islam. Invalidating its evidence of miraculous Inimitability (‘ijaaz) would mean the collapse of the entire Islamic edifice,

The single greatest weakness of man-made systems is that they are based on the fallible human intellect. It is this weakness that forces man to undergo an iterative process of development, such that experimentation with laws leads to new shortcomings, in an attempt to address existing shortcomings.