Best wide angle lens for the leica m typ 262?

Here is what the site says about that.

From Leica M (Typ 262): Leica M (Typ 262): A rangefinder by Leica with a 24-megapixel full frame sensor, announced in 2015. A simpler Typ 240 without live view or video. Specs - Maker: Leica - Mount: Leica M - Sensor: Full frame, 36 x 24mm, crop factor 1.0 - Resolution: 24 megapixels - Stabilisation: none in the body; use stabilised lenses for slow shutter speeds - Announced: 2015 - Type: rangefinder Focal lengths on it Full frame is ...

From Leica M-D (Typ 262): Leica M-D (Typ 262): A rangefinder by Leica with a 24-megapixel full frame sensor, announced in 2016. No rear screen: a digital M that works like a film one.

Quoted from this site's pages.