* In those days, people tried to feign poverty and display fake humility in an effort to look more worthy from a religious and social perspective. Rumi is saying that false humility or feigning poverty will not ingratiate you more in the eyes of the Beloved and in fact will be looked upon with indifference or even disdain. If you are doing these to get on the Path then you will not succeed in getting on the Path with these false gestures. be true and be you, and take the Path to the Beloved.
** The field of the Divine, or the Path of Light, the Way of Truth these are not the place for the cunning to be flaunting or strutting their pomposity. Egotism and ostentatious displays be they of a so-called spiritual flavor should are not valued in the Way of Truth.
*** Rumi's master, Shams was of Tabriz, and thus, Rumi's only concern was to follow his master and his practical teachings.
**** Temple was used for the word "Khaneghah" the place where sufis would gather and conduct spiritual practices, including zekr, [remembrance of the divine] and the dance of samaa to music or drums [daf, the frame drum]
***** Rumi is pointing out that he does not seek God for the sole personal benefit of attaining heaven, but is in love of God and wants to attain that state of divine union merely for the deep and overwhelming, intoxicating supremely blissful state of union, and not for any personal gain.