('Aql). The intellect or the faculty of reason. The word 'aql derives from 'iqal which means fetter. The intellect fetters man and it also puts its hooks into him, preventing him from making the final stages of the ascent. On the ascension to Allah (mi'raj) there is a point which is indicated by the term 'The Lote tree of the Uttermost Boundary'. It marks the 'place' where reason (the fetter) must be left behind. From this point onwards the traveller journeys with passionate love, yearning and bewilderment. On the Ascension of the Holy Prophet Muhammad (May the Salutations of Allah be upon him and Peace) it was at the Lote tree of the Uttermost Boundary that his companion, the Archangel Gabriel (Peace be upon him) stopped through fear of being annihilated. This station of fear is the highest point to which the intellect can attain.
(Fikr). Reflection or the power of thought and cogitation. It is the ability to put together the details accumulated by the senses and acquired through the imagination. Fikr is a quality possessed only by man, and even though it is one of the means through which he can obtain knowledge of Allah, ultimately, True Knowledge of the Absolute comes through 'unveiling', 'opening', 'taste', 'insight' and 'witnessing'.