Wa `alaykum as-salam: This is what Shaykh Nuh Keller (may Allah preserve him) says in his little booklet about the Shadhili tariqa and thus, that's what I've heard about Shaykh Nuh Keller (may Allah preserve him)'s Shadhiliya-Darqawiya-Hashimiya tariqa which goes through Shaykh `Abd ar-Rahman Shaghouri (may Allah have mercy upon him) and Shaykh Muhammad al-Hashimi (may Allah have mercy upon him) Wassalam