What is しか here?


> [至誠]{しせい}に[悖]{もと}る[勿]{な}かり **しか**  
>  [言行]{げんこう}に[恥]{は}づる[勿]{な}かり **しか**...

What part of speech is it?

[Wiki](https://ja.wikipedia.org/wiki/%E4%BA%94%E7%9C%81) translates it as
真心に反する点はなかったか, which going by meaning only fits with 2（連語）
[here](http://kobun.weblio.jp/content/%E3%81%97%E3%81%8B), but I couldn't find
examples where し 副助詞 follows 連用形. Is it the しか（終助詞）? If it's き 已然形, why is it
已然形?




It's direct past [き](https://classicaljapanese.wordpress.com/2014/11/18/ki/) +
question [か](http://kobun.weblio.jp/content/%E3%81%8B) (see the 係助詞 one).

The particle か causes [係【かか】り結【むす】び](http://www.thomasdougherty.net/?p=114)
phenomenon, which makes the sentence verb end in 連体形 no matter where か
attaches to in the sentence. In the link about き above you can see its 連体形 is
し.




It's direct past [き](https://classicaljapanese.wordpress.com/2014/11/18/ki/) +
question [か](http://kobun.weblio.jp/content/%E3%81%8B) (see the 係助詞 one).

The particle か causes [係【かか】り結【むす】び](http://www.thomasdougherty.net/?p=114)
phenomenon, which makes the sentence verb end in 連体形 no matter where か
attaches to in the sentence. In the link about き above you can see its 連体形 is
し.

