this nazm was discussed in another thread; http://sunniport.com/index.php?threads/is-this-shair-ok-be-khud-kiyay-detay-hain.4097/#post-10037 you will find some examples of the "problematic" verses there.
Shariah does not run on guess work. وَإِن تُطِعْ أَكْثَرَ مَن فِي الْأَرْضِ يُضِلُّوكَ عَن سَبِيلِ اللَّهِ ۚ إِن يَتَّبِعُونَ إِلَّا الظَّنَّ وَإِنْ هُمْ إِلَّا يَخْرُصُونَ [Ana`am 6:116] And O listener, (followers of the Prophet) most of the people on earth are such that were you to obey them, they would mislead you from Allah’s way; they follow only assumptions and they only make guesses. I have not read ibn alFaridh's works; it is not easy, nor recommended for people who have not learnt even the basics, to try and understand works of Sufi masters. as for those who blatantly write AGAINST the Shariah, and try to pass it off as "Sufism" - they are no less than incarnate devils. So just stick to the rules set by our liege Lord, Muhammed Mustafa (Allah's blessings and peace be upon him).