Shaikh Mawlana Shah Wasiullah Allahabadi (Allah have mercy on him) said,
‘I have made it essential to include in my speech and writings (about the path) the sayings of the scholars of the Divine law and Prophetic traditions ( that is, fuqaha and muhaditheen). This is in order to save Tasawwuf from becoming an independent discipline in itself and to keep it totally subservient to al Quran and al Sunna.
I am observing that in this era people want to make it an independent discipline. I consider this to be the source of (religious) calamities.
Therefore, in addition to my writings I start my speeches with quotations from Quran and Sunna. Then to support them further I mention the stories of pious precedent saints and their sayings. And this is the way Hakim al Umma (Mawlana Ashraf ‘Ali Thanawi, Allah have mercy on him) did in his book ‘Masail e Sulook’.
This approach has benefited me a lot and I hope that it will be beneficial for others to. The first benefit will be the awareness of knowledge of Quran and Sunna. Also, when it will be firmly established in minds that the real obedience is is that of the Prophet (Allah’s blessings and peace be upon him) the desire to traverse the path in accordance with Sunna will develop. The blessings (barakah) of this mode will be axiomatic. Finally, knowledge of those things that are against Sunna and have crept into Tasawwuf will be acquired. This will save the masses from massive misguidance.’
Halaat e Muslih al-ummat ra, volume 3, page 319
Sayyidi wa sanadi Shaikh Mufti Taqi Usmani (Allah preserve him) has this same style. In his weekly discourses for the seekers of islah he has given dars of Prophetic traditions from Riyadh us Saliheen of Imam Nawawi, Adabul Mufrad of Imam Bukhari, Kitab uz Zuhd of Imam Ibn al-Mubarak, Tasharuf of Hakim al Umma (Allah have mercy on all of them). MashaAllah!