Manṭ iq uṭ-Ṭ ayr (The Conference of the Birds) and Gulshan-i Raz (Rose Garden of Secrets), written about a century apart, are based on suluk (mystical journey). The authors of these two books consider mystical path (tariqat) as a difficult path; Farid ud-Din Attar in Manṭ iq uṭ-Ṭ ayr calls it "valley" and Mahmud Shabestari in Gulshan-i Raz speaks about "obstacles". Gulshan-i Raz speaks about four obstacles to suluk and, in Manṭ iq uṭ-Ṭ ayr, Attar believes in seven valleys: request, love, knowledge, detachment, Unity, wonderment and finally poverty and annihilation. If the stages of suluk put forth by these two mystics are analyzed based on seven valleys in Manṭ iq uṭ-Ṭ ayr and forty stages of suluk (as mentioned by the Muslim mystics), it becomes clear that Shabestari puts forth "repentance" and not " request" as the first stage of suluk. In contrast to Attar, Shabestari proposes concepts for stages of "love" and "Unity (tohid)" which are accompanied by shaṭ ḥ iyyā t and tamat (ecstatic sayings), but Attar considers wonderment as necessary for Unity. The fourth valley in Attar’ s suluk, “ detachment” , like the stages of love (mohabbat), patience (sabr), exertion (jahd), worship (ibadat), and obedience to God (taslim), is not present in Shabestari’ s poetry. Similarly, the stages of piety (vara), sincerity (ikhlas), and saintship (vilayat) are present in Shabestari’ s poetry while they are nowhere to be seen in Manṭ iq uṭ-Ṭ ayr. The two poets cite 27 common stages and both of them do not mention a number of stages. In this descriptive-analytical study, seven valleys of Attar and the forty stages of suluk, as basis of the research, are evaluated in Manṭ iq uṭ-Ṭ ayr and Gulshan-i Raz, and common and controversial concepts and terms are outlined in them.